A maximum-severity security vulnerability impacting LiteSpeed User-End cPanel Plugin has come under active exploitation in the wild.
The flaw, tracked as CVE-2026-48172 (CVSS score: 10.0), relates to an instance of incorrect privilege assignment that an attacker could abuse to run arbitrary scripts with elevated permissions.
“Any cPanel user (including an attacker or a compromised account) may exploit the lsws.redisAble function to execute arbitrary scripts as root,” LiteSpeed said.
The vulnerability impacts all versions of the plugin between 2.3 and 2.4.4. LiteSpeed’s WHM plugin is not impacted. The issue has been addressed in version 2.4.5. Security researcher David Strydom has been credited with discovering and reporting the flaw.
LiteSpeed noted that the “vulnerability is being actively exploited,” but refrained from sharing additional details. It has provided the following indicator of compromise –
grep -rE "cpanel_jsonapi_func=redisAble" /var/cpanel/logs /usr/local/cpanel/logs/ 2>/dev/null
If running the aforementioned “grep” command does not produce any output, the server is not affected. However, if there is any output, users are advised to examine the IP addresses in the list and determine if they are legitimate, and if not, block them.
Following a security review of its cPanel and WHM plugins in the wake of the vulnerability, LiteSpeed said it has patched additional potential attack vectors in both plugins and released cPanel plugin version 2.4.7 as part of WHM plugin version 5.3.1.0.
Users are advised to upgrade to LiteSpeed WHM Plugin version 5.3.1.0, which is bundled with cPanel plugin v2.4.7 or higher, to patch the vulnerability. If immediate patching is not an option, it’s recommended to remove the user-end plugin by running the below command –
/usr/local/lsws/admin/misc/lscmctl cpanelplugin --uninstall
The development comes weeks after a critical cPanel vulnerability (CVE-2026-41940, CVSS score: 9.8) was identified as actively exploited by unknown threat actors to deploy Mirai botnet variants and a ransomware strain called Sorry.
Update
The U.S. Cybersecurity and Infrastructure Security Agency (CISA), on May 26, 2026, added CVE-2026-48172 to its Known Exploited Vulnerabilities (KEV) catalog, requiring Federal Civilian Executive Branch (FCEB) agencies to apply fixes for the flaw by May 29, 2026.
